Hi}. GRAMINA. 203 



1330. PoA ALPiNA, Linn, 



********* 10 *1'^**-'-^-'-" l'- 

 South limit in Caernarvon, York. 



North limit in Sutherland. 



Estimate of provinces 6. Estimate of counties 19. 



Latitude 53 — 59. Highland type of distribution. 



Arctic region. Midarctic — Superarctic zones. 



Descends to 800 yards, or lower, in Hvimber. 



Ascends to 1300 yards, in East Highlands. 



Range of mean annual temperature 40 — 33. 



Native. Rupestral. The Lake province rests still upon 

 old records of the last century, that it would be well to 

 replace by fresh observation, although the habitat is pro- 

 bable enough. The other provinces are sufficiently au- 

 thenticated, and are represented in my herbarium through 

 specimens collected by the hands of living botanists. 



1331. POA PBATENSIS, Limi. 



1331, b. PoA ANGUSTiFOLiA, Linn. ? 



1331, C. POA SUBCERULEA, Svi. 



Area general. 



South Kmit in Cornwall, Isle of Wight, Kent. 

 North limit in Shetland, Orkney, Hebrides. 

 Estimate of jn-ovinces 18. Estimate of counties 82. 

 Latitude 50 — 61. British type of distribution. 

 A. A. regions. Inferagi'arian — Midarctic zones. 

 Descends to the coast level, in the Peninsula. 

 Ascends to 950 yards, in East Highlands (Dickie). 

 Range of mean annual temperature 52 — 37. 



